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of a faulty cut-off valve in the fuel pump, or it
may be air trapped in the nozzle line. It may take
several ring cycles for that air to be fully vented
through the nozzle. Water in the fuel or poor
ame shape can also cause shut down noises.
NOTICE
CHECK TEST PROCEDURE. A very good test for
isolating fuel side problems is to disconnect the
fuel system and with a 2 foot length of tubing, re
out of an auxiliary ve gallon pail of clean, fresh,
warm #2 oil from another source. If the burner runs
successfully when drawing out of the auxiliary
pail then the problem is isolated to the fuel or fuel
lines being used on the jobsite.
G. TEST CONTROLS
WARNING
Before installation of the boiler is considered
complete, the operation of all boiler controls must
be checked, particularly the primary control and
high limit control.
1. CHECK THERMOSTAT OPERATION. Raise and
lower thermostat setting as required to start and stop
burner.
2. VERIFY PRIMARY CONTROL SAFETY
FEATURES using procedures outlined in
Instructions furnished with control (See back of
Control Cover) or Instructions as follows:
WARNING
FOR HEATING SERVICEMAN
ONLY
a. Simulate ame failure:
• Follow the starting procedure to turn on the
burner.
• Close the hand valve in the oil supply line.
• Safety switch should lock out in
approximately 15 seconds. Ignition should
stop and oil valve should close. Blower will
stop after postpurge period.
• Push red reset button to reset safety switch.
b. Simulate ignition failure:
• Follow the starting procedure to turn on the
burner, but do not open the oil supply hand
valve.
• Safety switch should lock out in
approximately 15 seconds. Ignition and
motor should stop and oil valve should
close.
• Push red reset button to reset safety switch.
c.
Simulate power failure:
• Follow the starting procedure to turn on the
burner.
• With the burner running, turn off the power
to the system by tripping the circuit breaker
or removing the fuse.
• Burner should stop.
• Restore power. Burner should start.
d. If system does not operate as described, go to the
TROUBLESHOOTING AND MAINTENANCE
section.
3. VERIFY HIGH LIMIT OPERATION.
a. Adjust thermostat to highest setting.
b. Observe temperature gauge. When temperature
is indicated, adjust limit to setting below
observed temperature. Burner should stop.
c. Adjust limit to setting above observed
temperature. Burner should start.
d. Adjust thermostat to lowest setting. Adjust limit
to desired setting.
4. CHECK LOW WATER CUTOFF (if so equipped).
a. Adjust thermostat to highest setting.
b. With boiler operating, open drain valve and
slowly drain boiler.
c. Burner should stop when water level drops
below low water cutoff probe. Verify limit,
thermostat or other controls have not shut off
boiler.
d. Adjust thermostat to lowest setting. Rell boiler.
H. Boiler is now ready to be put into service.
IMPORTANT
IF, DURING NORMAL OPERATION, IT IS
NECESSARY TO ADD WATER MORE FREQUENTLY
THAN ONCE A MONTH, CONSULT A QUALIFIED
SERVICE TECHNICIAN TO CHECK YOUR
SYSTEM FOR LEAKS.
A leaky system will increase the volume of make-up
water supplied to the boiler which can signicantly
shorten the life of the boiler. Entrained in make-up
water are dissolved minerals and oxygen. When the
fresh, cool make-up water is heated in the boiler
the minerals fall out as sediment and the oxygen
escapes as a gas. Both can result in reduced boiler
life. The accumulation of sediment can eventually
isolate the water from contacting the steel. When this
happens the steel in that area gets extremely hot and
eventually cracks. The presence of free oxygen in the
boiler creates a corrosive atmosphere which, if the
concentration becomes high enough, can corrode the